Instead of creating Quote Items one item at a time, you may want to setup Quote Templates to automatically add Products to your Quote. Once you select a Quote Template you can make further changes to the Products to fit the specific situation.
Creating Quote Templates
Click on the '+' button in the blue margin and click on the 'Quote Templates' tab.
Select an existing 'Quote Template' to make changes to or click 'New Quote Template' to create a new one.
Add a name for the Quote Template, add Quote Items to the template exactly as you would on the Quote page and click 'Save'.Once the Quote Template is saved. You and your users will be able to select the Template when creating a new Quote.